Motor.



L. MILLER.

MOTOR.

' APPLICATION FILED MAYS. 1914. 1 134,147.- Patented Apr. 6,1915. 4 SHEETS-SHEET 1.

L. MILLER.

MOTOR.

APPLICATION FILED MAY 5. 1914.

1,1 34,147. Patented Apr. 6, 1915.

4 SHEETSSHEET 2. 130124 3.5 3

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L. MILLER.

MOTOR.

APPLICATION FILED MAY 5, 1914. 1,1 34,147. Pa ent d Apr. 6, 1915. V 4 SHEETS-SHEET s.

Patented Apr. 6; 19-15.

4 SHEETS-BHEET 4.

L. MILLER.

MOTOR.

APPLICATION FILED MAY 5, 1914.

MW 1 1 E a V Qnmv .1 MA mwfif. Q \Y Rub 1 QM. \\\\L\\NJ nu h 1 1 PW 1 K LEONARD MILLER, OF BROWNWOOD, TEXAS.

MOTOR.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed May 5, 1914. Serial No. 836,514.

To all whom it may concern p Be it known that I, LEONARD lV [1LLER, citizen of the United States, residing at Brownwood, in the county of Brown and State of TeXas, have invented certain new and useful Improvements in Motors, of

which the following is a specification.

This invention relates to motors and has for its object the provision of a compact and simply arranged mechanism by which the expansive power of metal may be utilized to drive machinery.

A further object of the invention is to provide means whereby a metal bar or series of bars may be alternately subjected to heat and cold so as to be successively expanded and then contracted and the consequent lengthening and shortening of the bar utilized to apply power.

A further object of the invention is to provide means for automatically controlling ,the passage of the heating and cooling agents to the bar or bars, and a further object of the invention is to provide means for overcoming a dead-center should the motor come to rest at such point.

The several stated objects of the invention, and such other objects as will incidentally appear from the following description, are attained in such a mechanism as is illus trated in the accompanying drawings, and

the invention consists in certain novel fea-' In carrying out my invention I employ an upright standard or frame 1 secured rigidly upon a base 2 and suitably braced by webs or diagonally disposed frames 3. The main frame or standard 1 is open through its center so as to accommodate the moving parts and connections and may, of course, be of any desired size. At the front and rear of the said frame I arrange a plurality of hollow metal bars l which are preferably of aluminum and are connected in a series so that motion may be transmitted from one end of the series to the other, and at the latter end utilized to operate a movable member. A lever 5 is fulcrumed at one end to an upper corner of the main frame, as indicated at 6, and one of said lever adjacent its fulcrum by means of a split collar 7 carried by the said bar and secured around a pin 8 projecting from the lever. The bars may be of any desired number and in the present instance I have shown siX bars at each side of the mainframe, the end bar at the rear of the frame and adjacent the fulcrum of the lever 5 being attached at one end to a fixed stud or resistance block 9. The said bar has a threaded post or stem 10 secured in its upper end, as clearly shown in Fig. 2, and the said stem or post projects through the said resistance block 9 so as to extend above the same. A spring 11 is coiled around the stem above the said block and'an adjusting nut 12 is fitted upon the stern above the spring so as to regulate the tension thereof. A nut 13 is fitted upon the stem below the resistance block and is adapted to bear against the said block so as to receive the motion of the bar, the spring 11 tending to maintain the nut 13 against the resistance block and also serving as a governor to prevent spasmodic or uneven movement of the parts. The lower end of the said bar carries a bracket 1 k terminating in a split collar 15 which fits around a stud 16 at one end of a lever 17 which is fulcrumed upon the lower portion of the frame 1. The opposite end of the said lever is provided with a similar crank pin 18 to which is fitted the lower end ofthe next adjacent motor bar, as clearly shown in Fig. 2. The upper end of the said second motor bar is similarly connected with a lever 19 which forms a connection between the said bar and the other motor barand is suitably fulcrumed upon the up er portion of the main frame. The s no rorm of connection is utilized the series so that each bar is connected at its lower end to a bar at one side, and at its upper end to the bar at the opposite side. The bar at that end of the series more remote from the initial bar, which will, for convenience, be referred to as the anchor bar and is connected to the resistance block 9 in the manner shown and described, is disposed somewhat obliquely and has its upper end connected to one crank 20 of an angle lever 21 which is ful- 6 the end bars 4: is pivotally connected to the-i upper end of a motor bar at the frontof' themain frameand the slower endof this,

motor bar is" connected with a lever 23 which, serves to connect it with-the lowernend of the next adjacent motor bar. The motor bars at the front ofthe frameare-thus connected at their upper and lower ends in the same manner as-the bars at the rear-0fthe frame, and the end bar of the series is con-Q nected to the-lever-fi, as reviously stated;

It'will be re'adily notedt at when the sev-' eral bars are highly heated-and thereby ex- -panded,. the lengthening of the bars will about-"their fulcrums so that the-crank-arms of the levers will swing through arcs',the-

amplitude of which successively increase from the lower end of the anchor bartof-the power applying bar-whieh is connected to the lever 5's0-that, whilethe crank-arm-at the lower end of theanchor bar mayihave a with the-machinery to-be driven;

bars. ures, passages 24 are formed longitudinally through thesaid bars so that the heating and cooling agents circulate freely through the bars, while at-the same time thebars will have suflicient=substanceto possess the nee essary strength to apply the power generated and to resist bucklingor bending under the successive variations 'of'the temperature. It will be readily seen that the longi tudina-L passages 24; are arranged through the axial center of the bars anda-lsoat points spaced from the center but outof radial aline mentso that webs will be left'between the adj acentopenings or passages to guard against collapse of the bars. To facilitate the communication between the passages transverse openings 25 may be provided at Various points within the bars. Each bar has a cap 1 and'the adjacent surface of the bar so that leakage between the cap and the bar will be prevented. A threaded stud 28 is secured in the-end of the bar and projects beyond the same and throughthe cap to receive the bracket l icarrying the split ring or collar 15, and the said bracket may be utilized as a clamping nut so that, if it be turned home against the cap through its threaded connection with the stud 28, the cap ywill be firmly clamped to the bracket 14, and a gasket 29 is fitted between the cap and the bracket -ply', asiwill i be readily; understood. a ,y-The freeend:of;the1lever 5is,piv

In Figs. 5 and 61 have illustrated in de tail the construction of the hollow motor. As clearly shown in the said fig-- around the stud 28 so as to prevent leakage at this point, as will be readily understood, It =will'be 'readily'noted uponreference to Eig. 5 that a chamber or space is-provided between the cap and the end of the bar, and

preferred manner. The construction at the lower end Off/h6- bars :isidentical with that haust-tu 7 end of 'eachbar to-1an:exhaust;0r outlet pipe 2 33 which may :be. disposed man convenient manner at; "the lower portion f of: the frame gper just described and an-rex- 32 leadsLfromrthecap at the lower f and carried-Ito desired pointto lead the 1 I produets-of condensationfromthe motor, ten'dto swing the several connecting levers "A {convenientdispositihn 10f the said iprod A I uets will, he ate connect -the exhaust :or 'dis-' I charge pipewith. thezboilerl-so that-the zw ater. may be again-jutilizedifor*thejformation of steam: :Thesupply pipe valvej. casing 34 1' which;

nected ZWltll any" :convenienti source or tallyat side of theymain: frame,,as: clearly shown. The said icrossehead:is provided'z at; or, near leadslfrom' 11 I a l'ififlgediflt 1 front side 1035: the l-frameulr and receive steam through its upper; end a :pipe 3 very slight and almost imperceptible movement, the movement of the lever- 5 willbef very pronounced; The free end-of the lever, isconnected through suitable mechanism its :lower :end. ith.-a;smd40 which receives the lower end vof theapi-tImL-n .-37, an'd a second s'tud-oigpin rfl is"-.-providedinear ithe' upper end (ht-"the said cross-head. to: receive the lower end of'a linkonconnecting rod 42 which has] its upper ;,-end *pivotally; -.connected withl a crank-pin 43'auponaorank-disk The said I crank disk:44 issecuredrigidlyv on the in ner: end of the power sh'aftt45 which lSfjOlll naled in suitable }bearings 46=upon:the,main, frame and-isequipp'ed at its. outer end-with a: combined band pulley and .flyr-wheel 47 ,A

belt- 48 is trained around 'the said band .pul-

ley and fiy wheel 47v second hand pulley 49 whichiscarriedmyashaft 50 mount-' ed in any convenient supports upon the base 2, a gearrwheel 5.1 being also carried by the saidi'sha-fti50 and meshing with apinion 52' upon ashaft which may form a part of the machine to lie-driven or may be extended to a distant point to' transmit the power. It

will, of course, be understoodthat the pinshaft 50 maybe utilized as the transmission ion 52 and its-shaft 'are not essential and the 3 shaft. A linkor: connecting rod 42 has its lower endsecured'to a boxing 53 in which are mounted the bearings 54'wvhichfit around thestudsor: =pin41, as-shown most clearly-in stud or pin 55 and the upper-end-of the said extension and thereby yieldably hold the said upper bearing 54 to the stud or pin 41, Should the device come; to rest upon the dead center, asindi a ed-in- Fig. 4:, up-

ward movement of the Across-head would carry the upper'bearing S i againSt; the said spring, which would be?! compressed and,

eye 59 in whichis securedaliiter: or starting bar 60. This starting :bar or lifter is. normally held'toward the cross-head by. a;

spring 61 secured to thecross-headand engaging a clip 62 carried by the lifter, as shown in Figg i'. The. upper end of the lifter is turned laterally so as to liev at an angle to the length of the lifter and the radius of the crank disk 44 and is adapted to engage a starting pin 63 carried by the said disk. A friction roller 64: is mounted upon the said pin 63 so as to reduce the wear between the parts-and also tend to overcome any liability ofv the lifter bindingfwhenin operation. I i 7 Assuming the, parts tobe in'the position shown in Fig. 4, if an upward movement be imparted to the cross-head, the lifter will be carried against the pin 63 and will move the same upwardly so that the crank disk will be rotated sufiiciently to carry the crank pin 43 beyond'the dead center. The device will then operate in the ordinary manner and;

when the starting pin has completed a revoit will ride against the under surface of the obliquely disposed portion of the lifter and i casing 3%, and the said gear meshes with a pinion or cooperating gear 69 which is rigidwith the extended stem of the valve 70. As

illustrated in the drawings, the valve is in a position to establish communication between the steam feeding pipe 35 and the main supply pipe 31. The steam will heat the motor bars so as to expand the same and cause the power lever 5 .to swing upwardly aboutits fulcrum, and this upward movement of the lever will be transmitted through the pitman 37 to the cross-head 38 so as to actuate the power shaft 45;. The eccentric'65 will be'carried'aro'u'nd by thepower'shaft so as to raise the eccentric rod. 66 and, consequently; the gear v67 will actuate. the pinion 69, to move'the' valve 7 O. sothat its port will I establish communication between the supply =pipe31'and the cold water pipe 36 and cut consequently,breakage; of'the -parts would; v not occur-. Between- .thel studs; {or pins 40 .From the foregoing description taken in v and 41 a bracket 58 is pivotallymountedv upon the cross-head and the said; bracket projects forwardly from the cross-head; and-" is provided at? its front extremity'with. an

off the fiowrfrom the steam pipe.

connection with the accompanying drawings itfis:thought*that the operation of my improved motor will be readily understood. lglvhenfsteaniis admitted'tothe supply pipe it"will fio'w, from lthe said pipe through LtheseVeral'tubeSfQ O into all the motor bars so that the said bars will be simultaneously heated. As the barsv are raisedin temperature'they willexpand and the movement due to expansion will be -.transmitted through the several cranks and levers to the" power lever 5, as hereinbefore stated, so that said "lever will be movedupwardly to the limit of its stroke. As the lever moves upwardly the pitman 37. will; of course, be drawn up- I wardly so that the cross-head 38- will be raised and will actuate the power shaft through the link12 and the :crank diskAA,

as will be readily understood. Therotation of the powershaft will carry the eccentric 65 around to its upper position so thatthe valve 7 0 will be automatically shifted to cut off the flow of steam andpermitcold water to flow to the several motor bars just as the power lever reaches the upper limit of its 7 stroke. The cold water will follow the same path the steam previously followed and will cause simultaneous action of the motor bars lution, or is about to complete a. revolution;

and cause them to contract softhat the power lever will be lowered and thei-rotation of the power shaft will be completed. The band pulley an'd power wheel '47 will tend to carry the crank diski A past boththe upper and lower dead centers but there will be a possible tendency ofthe machine to come to rest upon the lower deadcc'enter owing to the gravity. of the several parts, as-will be readily understood. Of course, as the parts approach this lower dead center or starting point, the valve 70 will be shifted so as to cut ofi the flow of cold water and reestablish the communication between the steam pipe and the supply pipe.

My device is exceedingly simple in the construction and arrangement of'its parts and will occupy very little space in the 7 power plant so that it may be economically installed and may operated without any 

